MORE REFACTORING!! + some improvements

Signed-off-by: ari melody <ari@arimelody.me>

api/v1/music/track.go

@@ -1,100 +0,0 @@
-package music
-
-import (
-	"fmt"
-
-	"github.com/jmoiron/sqlx"
-)
-
-type Track struct {
-    Number      int     `json:"number"`
-    Title       string  `json:"title"`
-    Description string  `json:"description"`
-    Lyrics      string  `json:"lyrics"`
-    PreviewURL  string  `json:"previewURL"`
-}
-
-// GETTERS
-
-func (track Track) GetNumber() int {
-	return track.Number
-}
-
-func (track Track) GetTitle() string {
-	return track.Title
-}
-
-func (track Track) GetDescription() string {
-	return track.Description
-}
-
-func (track Track) GetLyrics() string {
-	return track.Lyrics
-}
-
-func (track Track) GetPreviewURL() string {
-	return track.PreviewURL
-}
-
-// SETTERS
-
-func (track Track) SetNumber(number int) error {
-	// TODO: update DB
-	track.Number = number
-	return nil
-}
-
-func (track Track) SetTitle(title string) error {
-	// TODO: update DB
-	track.Title = title
-	return nil
-}
-
-func (track Track) SetDescription(description string) error {
-	// TODO: update DB
-	track.Description = description
-	return nil
-}
-
-func (track Track) SetLyrics(lyrics string) error {
-	// TODO: update DB
-	track.Lyrics = lyrics
-	return nil
-}
-
-func (track Track) SetPreviewURL(previewURL string) error {
-	// TODO: update DB
-	track.PreviewURL = previewURL
-	return nil
-}
-
-// DATABASE
-
-func PullReleaseTracks(db *sqlx.DB, releaseID string) ([]Track, error) {
-    var tracks = []Track{}
-
-	track_rows, err := db.Query("SELECT number, title, description, lyrics, preview_url FROM musictracks WHERE release=$1", releaseID)
-	if err != nil {
-        return []Track{}, err
-	}
-
-	for track_rows.Next() {
-        var track = Track{}
-
-        err = track_rows.Scan(
-            &track.Number,
-            &track.Title,
-            &track.Description,
-            &track.Lyrics,
-            &track.PreviewURL,
-        )
-        if err != nil {
-            fmt.Printf("Error while pulling track for release %s: %s\n", releaseID, err)
-            continue
-        }
-
-        tracks = append(tracks, track)
-    }
-
-    return tracks, nil
-}